Home / 143,946.25-198,657.97-79,421.45

Finding the Fourth Proportional to 143,946.25, 198,657.97 and 79,421.45

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Solution

The fourth proportional to 143,946.25, 198,657.97 and 79,421.45 is: 109,608.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,946.25 : 198,657.97 = 79,421.45 : x
  2. Step 2: Convert to fraction form
    143,946.25/198,657.97 = 79,421.45/x
  3. Step 3: Cross multiply
    143,946.25x = 198,657.97 × 79,421.45
  4. Step 4: Simplify right side
    143,946.25x = 15,777,702,839.61
  5. Step 5: Solve for x
    x = 15,777,702,839.61/143,946.25
  6. Step 6: Final answer
    x = 109,608.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.